Ok I quite the newbie so I hope you can bear with what might be a stupid question. First let me say that I love this site and all you guys are great. I use a Mac with OS X so there is no way I can run some of the tools recommended for ROM stuff.
I would however like to take my TyTN II from radio 22.214.171.124 to 126.96.36.199.
I downloaded from http://www.cinetsystems.com/
the KAIS_Radio_Only_188.8.131.52_CustomRUU.rar, and it expands into an RUU_signed.nbh and a CustomRUU.exe . All I have to do is run the .exe to flash the radio? It will not wipe out the data on my device? Do I need to copy both files to the TyTN II or is the .exe self contained?